[FFmpeg-devel] [PATCH 1/2] vc1dec: support multiple slices in frame coded images with hwaccel

Carl Eugen Hoyos ceffmpeg at gmail.com
Sun Nov 20 18:16:56 EET 2016

2016-11-18 19:42 GMT+01:00 Hendrik Leppkes <h.leppkes at gmail.com>:
> On Fri, Nov 18, 2016 at 6:40 PM, Michael Niedermayer
> <michael at niedermayer.cc> wrote:
>> On Fri, Nov 18, 2016 at 03:18:27PM +0100, Hendrik Leppkes wrote:

>>> - This does fix decoding of these samples on Intel GPUs using VAAPI,
>>> however it appears to break on AMD using VAAPI. Important to note here
>>> however is that this change is matching up with the vaapi spec, and
>>> the AMD implementation is more or less hacky.
>>> - VDPAU seems to overall be unimpressed and keeps working as before.
>>> I hope I summarized the non-DXVA2 cases properly, as I didn't test
>>> those personally, but relied on data from Mark Thompson.
>>> Despite the breakage of AMD VAAPI decoding, this change appears to be
>>> correct in the sense that it matches the VAAPI and DXVA2 specs on how
>>> to handle slices and fixes decoding on two different GPUs, using those
>>> two APIs.
>> can the amd case be detected and the implementation adapted so
>> everything works ?
> Not really.

There is no API to read the version of the mesa driver?

Carl Eugen

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